Britannica
Sources used in this answer
Why are stable flies pests of livestock?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Diptera
An adult housefly (Musca domestica) on a doughnut
Stable flies (Stomoxys calcitrans) are considered significant pests of livestock primarily due to their vicious bloodsucking habits. Unlike many other fly species where only females feed on blood, both male and female stable flies possess a hard, drill-like labium that allows them to pierce the skin of vertebrates to feed.12
Their status as pests is driven by several factors:
- Painful Feeding: Their biting behavior is highly irritating to livestock, causing distress and potentially reducing the health and productivity of the animals.12
- Disease Transmission: Stable flies can act as vectors for various animal diseases, including anthrax.1
- Mechanical Transmission: By moving between animals and piercing their skin, these flies can mechanically transmit disease-causing organisms if they are interrupted during a meal and quickly move to a new host.2
Effective control of these pests typically requires the elimination of their breeding sites, which consist of rotting or fermenting straw and other organic waste.1